Mechanism of formation of titanium dioxide crystallites in the reaction of titanium tetrachloride with magnesium hydrosilicate nanotubes

Bodalyov, I.S.; Малков, А. А.; Масленникова, Т. П.; Krasilin, Andrei A.; Малыгин, А. А.

doi:10.1016/j.mtchem.2018.10.013

Cited by 8 publications

(4 citation statements)

References 37 publications

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“…The results of earlier studies [7] carried out for biocatalysts and biosorbents based on carbon materials showed that the activity of immobilized biologically active substances was preserved for a considerable time in the case of the formation of nanosized coatings of a monolayer nature based on titanium or zirconium oxides on the carrier surface. As it was shown in the works [8][9][10][11], nanosized coatings significantly changed the chemical nature of the surface, acid-base properties of the surface, sorption and catalytic activity.…”

Section: Resultsmentioning

confidence: 96%

“…In order to change the chemical nature of the glassy phosphate material, we synthesized monolayer coatings based on elemental layers of titanium. One of the effective methods for their synthesis is the method of molecular layering [7][8][9]. The main advantages of the molecular layering technology are: control the thickness of the resulting film (a coating of several nanometers), reagents do not interact with each other until they reach the substrate, obtaining a uniform film thickness on the substrate.…”

Section: Methodsmentioning

confidence: 99%

“…Importantly, the synthesis process allows depositing a self-assembled element oxychloride monolayer, since the treatment time required to achieve a maximum coverage is determined by exhaustion of the active surface sites. As a result, a highly reproducible and conformal coating can be obtained [8,9].…”

Section: Methodsmentioning

confidence: 99%

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Foamed Glassy Phosphate Materials for Biosorbents

Karapetyan

Denisova

2021

MSF

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The paper considers the applications of foamed glassy phosphate materials as carriers of biologically active substances. One of the advantages of phosphate materials is their ability to effectively support the life of microorganisms. This feature of phosphate glassy materials opens up the prospects for the application of microorganism strains - destructors of oil products to their foamed samples, that is, the creation of biosorbents for purification of water and soil from hydrocarbon contamination. The advantages of a biosorbent are explained by the high biological activity of microorganisms on the surface of foamed glassy phosphates and the possibility of active development of microorganisms with the simultaneous destruction of petrochemical contaminants. The use of biosorbent eliminates the problem of its utilization and regeneration, thus it is suitable for repeated use. The formation of porous glassy phosphate materials on the surface by the method of molecular layering of monolayer coatings allows obtaining chemically modified composite materials, which improves their performance characteristics such as strengthening the material structure with a simultaneous increase in the catalytic activity of biochemical processes.

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Section: Resultsmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

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Foamed Glassy Phosphate Materials for Biosorbents

Karapetyan

Denisova

2021

MSF

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“…The ALD method is based on the deposition of atomic layers from the gas phase in a flow reactor using titanium and zirconium chlorides. The method allows sequentially synthesizing ultrathin films of titanium and zirconium oxides of a given chemical composition [11,12] on the surface of a solid-phase matrix. The synthesis is based on the irreversible chemical reactions between functional groups on the surface of a solid and molecules of a supplied reagent.…”

Section: Methodsmentioning

confidence: 99%

Carbon Materials for Immobilization of Biologically Active Substances

Denisova

Rastvorova

2020

KEM

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The paper considers applications of carbon materials as carriers of biologically active substances. The atomic layer deposition method allowed chemically synthesizing surface-modified composite materials based on graphite and carbon fibers, which maximally preserved the activity of enzymes and biologically active substances. It is shown that the activity of a biologically active substance depends on the chemical composition and state of the surface of carbon-based carriers.

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